538856831 has 2 divisors, whose sum is σ = 538856832. Its totient is φ = 538856830.

The previous prime is 538856827. The next prime is 538856881. The reversal of 538856831 is 138658835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 538856831 - 2² = 538856827 is a prime.

It is a super-2 number, since 2×538856831² = 580733368630725122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538856821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269428415 + 269428416.

It is an arithmetic number, because the mean of its divisors is an integer number (269428416).

Almost surely, 2^538856831 is an apocalyptic number.

538856831 is a deficient number, since it is larger than the sum of its proper divisors (1).

538856831 is an equidigital number, since it uses as much as digits as its factorization.

538856831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 47.

The square root of 538856831 is about 23213.2899650179. The cubic root of 538856831 is about 813.7502423228.

The spelling of 538856831 in words is "five hundred thirty-eight million, eight hundred fifty-six thousand, eight hundred thirty-one".